Pith Number

pith:TBRDJN4W

pith:2015:TBRDJN4WBE57VQC264XVVXC7GG

not attested not anchored not stored refs pending

Probing topological protection using a designer surface plasmon structure

Baile Zhang, Fei Gao, Hongsheng Chen, Hongyi Xu, John D. Joannopoulos, Ling Lu, Marin Soljacic, Xiao Lin, Xihang Shi, Yidong Chong, Zhaoju Yang, Zhen Gao

arxiv:1504.07809 v2 · 2015-04-29 · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TBRDJN4WBE57VQC264XVVXC7GG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:14:18.155544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

986234b796093bfac05af72f5adc5f318bea464ddf718d5520b8179139f4f7ec

Aliases

arxiv: 1504.07809 · arxiv_version: 1504.07809v2 · doi: 10.48550/arxiv.1504.07809 · pith_short_12: TBRDJN4WBE57 · pith_short_16: TBRDJN4WBE57VQC2 · pith_short_8: TBRDJN4W

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TBRDJN4WBE57VQC264XVVXC7GG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 986234b796093bfac05af72f5adc5f318bea464ddf718d5520b8179139f4f7ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15772cccd331cf039e4e1859196b1f310a58564a84422fa118e1cc0d9cedb015",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-04-29T11:06:47Z",
    "title_canon_sha256": "f9fdd1b1dffd8d93e01d85e31a05f01d7a0d891fefe2f8ed514b6f553bf42a09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07809",
    "kind": "arxiv",
    "version": 2
  }
}